850857-20-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 850857-20-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,5,0,8,5 and 7 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 850857-20:
(8*8)+(7*5)+(6*0)+(5*8)+(4*5)+(3*7)+(2*2)+(1*0)=184
184 % 10 = 4
So 850857-20-4 is a valid CAS Registry Number.